Table 1 Characteristics of the patients

Age (years)

75 ± 11

70 ± 13

0.289

Sex (male/female)

8/5

5/5

0.685

Height (cm)

163 ± 9

162 ± 9

0.841

Weight (kg)

58.8 ± 10.8

60.4 ± 12.1

0.770

Body surface area (m²)

1.63 ± 0.16

1.64 ± 0.20

0.914

APACHE II score

28 ± 6

29 ± 10

0.774

Reason for admission to the ICU

 Post-cardiac arrest

5

4

 Trauma

3

2

 Cerebral infarction/hemorrhage

0

3

0.336

 Burn

2

0

 Others

3

1

Days of enrollment after admission to the ICU

3.5 ± 1.5

3.0 ± 2.3

0.563

C-reactive protein

8.3 ± 7.5

5.6 ± 6.7

0.385

Basal energy expenditure (kcal/day)

1,219 ± 161

1,255 ± 239

0.703

Target volume of enteral feeding (mL/h)

46.7 ± 7.8

51.0 ± 12.9

0.341

Observational period (day)

9.3 ± 2.2

9.8 ± 0.6

0.430